CB2.5, CB2.7, CB2.9 and CC2.6 Vibratory Utility Compactors Propel System Caterpillar

Illustration 1	g06186156
Propel System General Information

The drums and wheels on the machines are hydrostatically driven. The propel drive system consists of a piston-type pump and radial-piston motors. Each motor is equipped with an integral spring applied, hydraulically released brake.

On dual-drum machines, the drive system consists of the following components:

• A single variable-displacement piston-type pump

• Two radial-piston motors, one on each drum

• A spring applied, hydraulically released brake on each drum

On single-drum machines, the drive system consists of the following components:

• A single variable-displacement piston-type pump

• A radial-piston motor on the front drum

• Two radial-piston motors, one on each wheel assembly

• A spring applied, hydraulically released brake on the drum and each wheel assembly

The steering pump supplies charge oil to the propel system.